Question

X ao quadrado +3x-10=0

Answer 1

x2 + 3x-10 = 0
a=1
b=3
c=-10
 formula >>    b2 -4.a.c 
∧= (3) 2 -4(1) (-10) 
∧=9 + 40 
∧= 49 

formula >> -b +- √ ∧ / 2.a 

-(3) +- √49 /2.1 

x' = -3+7/2
x'= 4/2=2

x'' = -3-7/2
x''=-10/2 = -5

resposta : {2,-5}

Answer 2

x²+3x-10=0

(x-2)(x+5)=0

x-2=0 ou x+5=0

x=2 ou x =-5